(42) 



of two parts of soft soap and eight of water, with which 

 is to be mixed lime enough to bring it to the consistence of 

 thick whitewash. The larger trees already infested might 

 be saved by using Babcock's extinguisher. They are 

 preyed upon to some extent by parasites. 



A letter received March 19th, from J. Duncan Putnam, 

 Corresponding Secretary of the Davenport Academy of 

 Natural Sciences, states that the Lecanium acericola, still 

 continues to be very injurious to the Maple trees in that 

 city, though it spreads very slowly, and he thinks if proper 

 means were used, its injuries could be checked. The best 

 part of the shade trees of Davenport have been almost 

 entirely destroyed. He thinks the best preventive would 

 be to syringe the trees with water in which tobacco and 

 soap, or some other poison had been dissolved, applied at 

 the time the young lice are hatching. 



MAPLE LEAF CUTTER. Ornix Acerifoliella. FITCH. 

 (LEPIDOPTERA. TINEID.E.) 



During the summer of 1875 my attention was often 

 called to the appearance of the Maples growing in the 

 forests. They seemed as though nipped with frost. When 

 first observed it was about the first of August, and con- 

 tinued increasing until the fall of the leaves late in autumn. 

 Upon careful examination the depredator was found to be 

 a small white worm situated under a covering or scale 

 made from several pieces of the leaf, and feeding on the 

 pulpy substance. The worms fall with the leaves to the 

 ground in the autumn, and change to pupse in their cases, 

 where they may be found in the spring. When warm 

 weather advances, a small moth appears, of a dark, bril- 

 liant, blue color, with a bright orange-yellow head. These 

 insects are not found on Maple trees used for shade along 

 the street, or where standing alone in a field, but only in 

 forests, and for the reason that the leaves in the streets are 

 either gathered and destroyed in the autumn, or blown 

 about by the wind, and trampled under foot, thereby 



